Hannah being something of a big name, that surprised me some. And I thought the Isaac character came to a reasonable conclusion. The show hasn't been great in years in my min, but I thought last season was a step up from the previous season. And season 5 was good in my opinion mostly because of how good Lithgow was, otherwise structure wise it wasn't great.

That was season 4 and I thought it was great as well. 5 was the Lumen season which I actually liked but seems to be universally hated among Dexter.